Toyota CQ-LS7230K User Manual

General
Power Supply DC 12V (11V - 16V),
Test Voltage 26.4V
Negative Ground
Current Consumption Less than 3.0A
Power Output 20W×4ch
AM Radio
Frequency Range 531 - 1,602kHz
Usable Sensitivity 30dB(µV) (S/N 20dB)
Signal to Noise Ratio 45dB or more
FM Stereo Radio
Frequency Range 87.5 - 108.0MHz
Usable Sensitivity 7dB/µV (S/N 30dB)
Signal to Noise Ratio 50dB or more
CQ-LS7230K
AM/FM MPX Electronic Tuning Radio
with Stereo Cassette Tape Player
PART No. : 86120-02360
VEHICLE : COROLLA
DESTINATION : INDIA
PRODUCED AFTER : Nov., 2002
Cassette Player
Reproduction System 4-Track, 2-Program Stereo
Tape Speed 4.76cm/sec.
Wow and Flutter Less than 0.09% (WRMS)
Signal to Noise Ratio 40dB or more
Dimensions** 178×50×165mm
Weight** 1.3kg
* Specifications and the design are subject to possible modification
without notice due to improvements.
** Dimensions and Weight shown are approximate.
Dolby noise reduction manufactured under license from Dolby
Laboratories Licensing Corporation.
“Dolby” and the double-D symbol
are trade marks of Dolby
Laboratories Licensing Corporation.
Specification*

Toyota CQ-LS7230K Specifications

General

Brand	Toyota
Model	CQ-LS7230K
Category	Car Receiver
Language	English

Summary

Audio Component Service Manual Overview

CQ-LS7230K Product Specifications

Detailed specifications for the CQ-LS7230K AM/FM MPX Electronic Tuning Radio with Stereo Cassette Tape Player.

System Features and Rear Connectivity

Rear Connector Pin Assignments

Pin assignments and function details for the CN702 12-pin and CN701 10P/6P rear connectors.

Front Panel Controls and Operation

Primary Control Functions

Functions of Push PWR, VOL, MODE, AM, FM, TAPE, CD, TUNE, TRACK, and SCAN controls.

Secondary Controls and Display

Wiring Connection Diagram

Main PCB and Peripheral Connections

System Block Diagram

Radio, Tape, and Amplifier Blocks

Functional blocks for Radio, Tape Player, Power Amplifier, and Muting circuits.

Control and Display System Blocks

Functional blocks for CPU, Display, and system control interfaces.

Terminal Descriptions

Main Block (IC601 C2BBGE000647) Terminals

Detailed description of each pin and its function for the Main Block IC601.

Display Block (IC601 YEAMLC75853) Terminals

Detailed description of each pin and its function for the Display Block IC601.

Alignment Procedures

Alignment Conditions and Setup

Specifies power supply, output impedance, and control settings for alignment.

Dolby NR Alignment Steps

Procedure for aligning Dolby NR Rch and Lch levels using test tapes.

Exploded View of the Unit

Unit Component Layout Diagram

Tape Player Replacement Parts

Tape Player ICs, Transistors, and Capacitors

Tape Player Resistors and Mechanical Parts

Tape Deck Exploded View

Tape Deck Component Assembly Diagram

Wiring Diagrams

Display Block Wiring Diagram

Main Block Wiring Diagrams

Main Block PCB Top View Wiring

Main Block PCB Bottom View Wiring

Main Block PCB Layout

Main Block Bottom Layer Connections

Tape Block Wiring Diagrams - Part 1

Tape Block PCB Top View Wiring

Tape Block PCB Bottom View Wiring

Tape Block Wiring Diagrams - Part 2

Tape Block PCB Top View Wiring (Continued)

Tape Block PCB Bottom View Wiring (Continued)

Fix-EQ. Block Wiring Diagrams

Fix-EQ. Block PCB Top View Wiring

Fix-EQ. Block PCB Bottom View Wiring

Schematic Diagrams - Part 1

Tape Block Circuit Schematic

Detailed circuit schematic for the Tape Player mechanism.

Schematic Diagrams - Part 2

Fix-EQ. Block Circuit Schematic

Detailed circuit schematic for the Fix-EQ. Block.

Schematic Diagram - Main/Display Block

Main and Display Block Circuit Schematic

Detailed circuit schematic for the Main and Display Blocks.